Paper making machine



G. S. WITHAM, SR

PAPER MAKING MACHINE Filed March 21, 1928 lhmentor marmi;

Cttornegs 111 wi M41 #q lwilll l! 1W l I |11 I i M 1 Grrye'. 53'

June 3o, 1931.

Patented June 30, 1931 PAER MAKING MACHINE 'Appiicaaa mediteren 21, 1928, seri1 No.,2ve3,2eo. I l

It is a well known fact that thestrongcurrent of water running on thewire causes the fibres to positiony themselves in parallelism lengthwise of the wire. This condition not only creates a distinct grain in thel subsequently formedweb of paper, butreduces the transverse strength as wellas the'thickness of the paper. i

Many attempts have heretofore beenmade to cross the `libres and thereby avoid the slice is regulatedbythe height ofthe pond in rear of the slice.' This condition of course varies with different'gradesof paper being `formed, asfwell asw-ithfdiierent weights'of paper that mayfbeformed onthe machine. The rate of flow of the stock must coincide with that of the speed'ef the'wiref on which l the webisbeing formed. #It -,will therefore be -seen that allv efforts heretoforefmade Ito cross thefibres at a point inrearof ythe slice i are defeated because Aof the tendency of the fibres is to straighten out len gthwisewiththe current of water gushing outwardly through the opening ofthe slice. j i Y, Among the yseveral objects of my invention are to provide means for crossing thefibr'es4 at a point in advanceof the slice, 'that is,after thelpulp has passedxthe slice,"-soyas to eliminate theinluence that the action of the pond would have-on ,the-:libres as wellas eliminate the actionof the water and fibres gushing outwardly through theenarrow openingunder diey slice; to provide` rotary agit/ating v.means for, crossing theibres; and to support and operate said agitating means inamanner to permity ofA vertical` adjustment and' variable speedof rotation thereof.` Y, v n,

In thefaccompanyingdrawings,` which illustrate one formiof` my: invention, Figure 1 is a transverse sectional view through a slice erably 4of channel iron' construction.`

box showing the application of my invention.

` Figure 2 is a vertical sectional view taken at 'rightvangles to Figure 1. AFigure 3 isa'horizonta'l sectional view taken on"`tliey line S-Bfof Figure 2. n I

' Referring to the accompanying drawings,

vhave shown `my invention asfappliedto a paper makingma'chine ofv the Fourdrinier type inwhich indicates the-slice box, B the Fourdrinier screen, C the tablerolls,` D-D the :deckle straps, E-'-E the 4deckle plates, and F the transversely disposed slice. l' The slicefF is mounted kfor vertical adjustment relative to the VscreenB tofforrn an outlet opening 5-'forithe waterV and fibres.` n i Disposed directly advance oftheslice F above the screen andincooperative relation ther-ewi' h is my -'improved fibre` agit atingY means This agitating means is supported by the deckle plates in a'manner to permit 70 theIsame to be vertically adjusted.A` To this end I vprovide a supporting frame pref- ThS frame extendsl transversely* between Vthe vdecl-ile plates E and is rguided in'l its vvertical 75 movements by guide` bars 7-'-7. ,L The upper portions of `the'frame extend y`outivardly'so as to overhang the deckle plates E as'at`8 and k9 respectively; Brackets 'lO'and` llare attached to'theprojectingends 8 and 8,0 9 respectivelyy nand are l formed withffverti` 'n cally disposed threaded opening'syto receive the Shanks 12 and 13"ofadjustingscrews'lfl and 15 respectively, th'elower 'endsof the screws contacting with thefdeckle plates Eto support the agitating` means in `apositionot` vertical adjustment; -Associated with'each I ad]ustmg screw is a locking"nut"16` which cooperates withthe associatedprojection 8j .or-i9 to loclrtlie screw against,"accidentalturnf 90 ing.""` Supported onlthe frame'f4 isa vplurality yof vertically disposed shafts lhavinglat their 'lower' ends detachable* agitators y18, which may beof any `preferred construction. These shafts 17 are journaled inbearings` 19 attached yto the frame 6, 'and rfixed to each y shaft v17 above and belowy the frame 6 are stop collars 20-21 for retaining the shaft 17 against vertical movementrelative tothe Ul frame 6. The shafts 17 are adapted to be rotated at any desired speed by means of a variable speed motor 22 the agitators being thereby rotated in a horizontal plane. The motor 22 is mounted on a bracket 23 fixe-d to the projecting end 8 of the frame 6, so as to move up and down with the frame 6 when the latter is vertically adjusted. It will be noted that when the frame 6 is vertically adjusted the agitators 18 .and the actuating means therefor will be correspondingly moved.

In order to rotate the shaft 17 from the motor 22, a driving shaft 24 is connected to the armature shaft of the motor by a coupling 25. The shaft 24 is journaled in bearings 25 located within a housing 26 fixed to the upper end of the frame 6 and provided with a movable cover 27. Fixed to the upper end of each agitator shaft 17 is a worm gear 28 and secured to the shaft 24 is a plurality of worms 29 which mesh with the associated worm gears 28. The gears 28 and 29 are all located within the housing 26 and consequently the housing may be filled with grease for pro erly lubricating these gears.

rom the foregoing it will be observed that the agitators 18 will be rotated by the motor 22 and the speed of rotation may be varied as desi-red, and also that these agitators may be vertically adjusted together with the motor 22, and thereby maintain the agitators in driving connection with the motor regardless of the vertical position of adjustment of the agitators relative to the wire.

In operation, as the water and fibres pass outwardl through the opening 5 under the slice F, the agitators 18 will stir and rotate the fibres so as to cause the latter to be crossed.

The crossed fibres will remain in this condition until the by crossing the fibres in this manner the thickness of the paper will necessarily be increased and the transverse tensile strength of the web will be correspondingly increased.

Obviously various details of the invention may be modified in their position and arrangement without in any way departing from the spirit of the invention, which is to be regarded as limited only by the scope of the appended claims.

at I claim is:

1. In a paper making machine, including a screen, the combination of ,a slice box having an outlet through which pulp will be discharged upon the screen, a pluralityof pulp agitating devices located above the screen and in cooperative relation therewith in advance of the opening and supported on vertical axes for rotary movements in a horizontal plane, and means for rotating said devices.

2. In a paper making machine, including a screen, the combination of a slice box havpaper web is formed, and.

ing an outlet through which pulp will be discharged upon the screen, a frame extending across the box and supported thereon for vertical adjustments, a plurality of horizontally movable pulp agitating devices located above the screen and in cooperative relation therewith, said agitating devices being carried by the frame and movable therewith, and actuating means for said devices supported by and movable with said frame.

3. In a paper making machine, including a screen, the combination of a slice box having an outlet, a frame extending across the box adjacent the outlet and supported on said box for vertical adjustments, a plurality of shafts journaled on the frame kfor rotation about vertical axes above the screen, a plurality of pul agitating devices respectively fixed to the ower ends of the shafts and in cooperative relation with the screen, a. motor supported by and movable with said frame, and driving connections between the motor and said shafts.

4. In a paper making machine, the combination of a slice box having an outlet, a frame extending across the box adjacent the outlet and supported on said box for vertical adjustments, a plurality of shafts journaled on the frame for rotation about vertical axes, a plurality of'pulp agitating devices fixed to the lower ends of the respective shafts, a motor supported by and movable with said frame, and driving connections between the motor and said shafts including a driving shaft and gear couplings between the driving shaft and the vertical shafts, and a lubricant containing housin for the gear couplings supported on said frame.

In a paper making machine including a screen, the combination with a slice box adapted to discharge pulp upon the screen and including a slice; of a vertically adjustable frame mounted on said box;-pulp Aagitating means carried by the frame and rotatable ln a horizontal lane above the screen and in coo rative re ation therewith in advance of t e slice; a motor mounted on the frame; and driving connections between the motor and the agitating means carried by the vframe.

6. In a paper making machine, the combination of a Fourdrinier screen adapted to receive pulp for the formation of apa er web, a movable agitating device located a ove the screen and in cooperative relation therewith, and means mounting said agitating means for movements in azsubstantially horizontal plane in contact with the pulp on said screen.

In a paper making machine, the combination of a Fourdrinier screen adapted to receive pulp for the formation of a paper web, a rotatable agitating device located above the screen and in cooperative relation therewith, and means mounting said agitating means for rotary movements in a substantially horizontal plane in contactA with the pulp on said screen.

8. In a paper making machine includin a.

screen, the combination of a. slice box having an outlet arranged to'discharge pulp from said box on to said screen, movable pulp'agitating means, and means mountin said agitating means for movements in a orizontal plane above the screen and in contact with the pulp thereon in advance of said outlet.

9. In a paper making machine including a screen, the combination of -a slice box having an outlet arran ed to .discharge ypulp from said boz; on to said screen, rotatable pulp agitating means, and means mountin said agitating means for rotation in. a l(horizontal plane above the screen and in contact with the pulp thereon in advance of said outlet.

In testimony whereof, I have hereunto subscribed my name.

GEORGE s. WITHAMSR. 

